The Retail Advertising and Marketing Association would like to estimate the average amount of money that a person spends for Mother's Day with a 99 confidence interval and a margin of error within plus or minus 6.
Assuming the standard deviation for spending on Mother's Day is 36, the required sample size is ________.A) 210
B) 239
C) 284
D) 313
Question 2
The Retail Advertising and Marketing Association would like to estimate the average amount of money that a person spends for Mother's Day with a 99 confidence interval and a margin of error within plus or minus 12.
Assuming the standard deviation for spending on Mother's Day is 36, the required sample size is ________.A) 60
B) 72
C) 97
D) 108
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